diff --git a/src/pages/system/ai-agent/components/BlacklistAddModal.tsx b/src/pages/system/ai-agent/components/BlacklistAddModal.tsx
index b09a213..0a61369 100644
--- a/src/pages/system/ai-agent/components/BlacklistAddModal.tsx
+++ b/src/pages/system/ai-agent/components/BlacklistAddModal.tsx
@@ -8,6 +8,8 @@ import styles from './BlacklistAddModal.module.less';
 interface BlacklistAddModalProps {
   visible: boolean;
   submitting: boolean;
+  /** 预设用户信息（从列表行「再次拉黑」带入时使用） */
+  presetUser?: { userId: string; phone?: string; nickname?: string };
   onClose: () => void;
   onSubmit: (params: AiBlacklistAddParams) => void;
 }
@@ -27,12 +29,13 @@ export default defineComponent({
   props: {
     visible: { type: Boolean, default: false },
     submitting: { type: Boolean, default: false },
+    presetUser: { type: Object, default: undefined },
     onClose: { type: Function, default: null },
     onSubmit: { type: Function, default: null },
   },
   setup(props: BlacklistAddModalProps) {
     const form = reactive({
-      userId: undefined as number | undefined,
+      userId: undefined as string | undefined,
       reason: '',
       expireDate: null as Dayjs | null,
     });
@@ -40,21 +43,33 @@ export default defineComponent({
     // 用户搜索
     const userSearch = useUserSearch();
 
-    // 弹窗打开时重置表单
+    // 弹窗打开时重置表单 / 回填预设用户
+    // immediate: true 配合 destroyOnClose，组件重建后 visible 已为 true 时也能立即回填
     watch(
       () => props.visible,
       (val) => {
         if (val) {
-          form.userId = undefined;
           form.reason = '';
           form.expireDate = null;
           userSearch.reset();
+          if (props.presetUser) {
+            // 从列表行「再次拉黑」带入：回填 userId 并锁定
+            form.userId = props.presetUser.userId;
+            userSearch.setPresetUser({
+              userId: props.presetUser.userId,
+              phone: props.presetUser.phone,
+              nickname: props.presetUser.nickname,
+            });
+          } else {
+            form.userId = undefined;
+          }
         }
       },
+      { immediate: true },
     );
 
     const handleSubmit = () => {
-      if (!form.userId || form.userId <= 0) {
+      if (!form.userId) {
         message.warning('请搜索并选择用户');
         return;
       }
@@ -99,14 +114,15 @@ export default defineComponent({
             <Select
               showSearch
               value={form.userId ? String(form.userId) : undefined}
-              placeholder="输入手机号搜索用户"
+              placeholder="输入手机号或用户ID搜索"
               filterOption={false}
               loading={userSearch.searching.value}
               options={userSearch.options.value as any}
+              disabled={!!props.presetUser}
               style={{ width: '100%' }}
               onSearch={userSearch.onSearch}
               onChange={(val: any) => {
-                form.userId = val ? Number(val) : undefined;
+                form.userId = val ? String(val) : undefined;
               }}
               allowClear
               notFoundContent={
@@ -114,10 +130,12 @@ export default defineComponent({
                   ? '搜索中...'
                   : userSearch.keyword.value
                     ? '无匹配用户'
-                    : '请输入手机号搜索'
+                    : '请输入手机号或用户ID搜索'
               }
             />
-            <div class={styles.tip}>搜索手机号选择需要拉黑的用户，展示手机号，传用户ID给后端</div>
+            <div class={styles.tip}>
+              搜索手机号或用户ID选择需要拉黑的用户，展示手机号，传用户ID给后端
+            </div>
           </Form.Item>
 
           <Form.Item label="拉黑原因" required>
diff --git a/src/pages/system/ai-agent/components/BlacklistTab.tsx b/src/pages/system/ai-agent/components/BlacklistTab.tsx
index aa07404..3a9a787 100644
--- a/src/pages/system/ai-agent/components/BlacklistTab.tsx
+++ b/src/pages/system/ai-agent/components/BlacklistTab.tsx
@@ -26,10 +26,12 @@ export default defineComponent({
       pagination,
       addModalVisible,
       submitting,
+      presetUser,
       handleSearch,
       handleReset,
       handlePageChange,
       openAddModal,
+      openAddModalWithRecord,
       closeAddModal,
       handleSubmitAdd,
       handleRemove,
@@ -49,14 +51,18 @@ export default defineComponent({
 
     /** 渲染操作列 */
     const renderAction = (record: AiBlacklistVO) => {
-      if (record.status === 1) {
+      if (record.status == 1) {
         return (
           <Button type="link" size="small" danger onClick={() => handleRemove(record)}>
             解除拉黑
           </Button>
         );
       }
-      return <span style={{ color: '#999' }}>-</span>;
+      return (
+        <Button type="link" size="small" danger onClick={() => openAddModalWithRecord(record)}>
+          再次拉黑
+        </Button>
+      );
     };
 
     /** 完整表格列 */
@@ -65,7 +71,7 @@ export default defineComponent({
       {
         title: '操作',
         key: 'action',
-        width: 100,
+        width: 120,
         fixed: 'right' as const,
         align: 'center' as const,
       },
@@ -78,7 +84,7 @@ export default defineComponent({
             <Select
               showSearch
               value={filterForm.userId ? String(filterForm.userId) : undefined}
-              placeholder="手机号搜索用户"
+              placeholder="手机号或用户ID搜索用户"
               filterOption={false}
               loading={userSearch.searching.value}
               options={userSearch.options.value as any}
@@ -93,7 +99,7 @@ export default defineComponent({
                   ? '搜索中...'
                   : userSearch.keyword.value
                     ? '无匹配用户'
-                    : '输入手机号搜索'
+                    : '输入手机号或用户ID搜索'
               }
             />
             <Select
@@ -152,6 +158,7 @@ export default defineComponent({
           <BlacklistAddModal
             visible={addModalVisible.value}
             submitting={submitting.value}
+            presetUser={presetUser.value}
             onClose={closeAddModal}
             onSubmit={handleSubmitAdd}
           />
diff --git a/src/pages/system/ai-agent/components/PointsAdjustModal.tsx b/src/pages/system/ai-agent/components/PointsAdjustModal.tsx
index 354e77c..ba27b1f 100644
--- a/src/pages/system/ai-agent/components/PointsAdjustModal.tsx
+++ b/src/pages/system/ai-agent/components/PointsAdjustModal.tsx
@@ -10,7 +10,7 @@ interface PointsAdjustModalProps {
   visible: boolean;
   submitting: boolean;
   /** 预设用户信息（从账户行点击调点时带入） */
-  presetUser?: { userId: number; phone?: string; nickname?: string };
+  presetUser?: { userId: string; phone?: string; nickname?: string };
   onClose: () => void;
   onSubmit: (params: AiPointsAdjustParams) => void;
 }
@@ -37,7 +37,7 @@ export default defineComponent({
   },
   setup(props: PointsAdjustModalProps) {
     const form = reactive({
-      userId: undefined as number | undefined,
+      userId: undefined as string | undefined,
       points: undefined as number | undefined,
       type: 1 as number,
       descr: '',
@@ -60,7 +60,7 @@ export default defineComponent({
     }, [() => props.visible]);
 
     const handleSubmit = () => {
-      if (!form.userId || form.userId <= 0) {
+      if (!form.userId) {
         message.warning('请搜索并选择用户');
         return;
       }
@@ -97,7 +97,7 @@ export default defineComponent({
             <Select
               showSearch
               value={form.userId ? String(form.userId) : undefined}
-              placeholder="输入手机号搜索用户"
+              placeholder="输入手机号或用户ID搜索"
               filterOption={false}
               loading={userSearch.searching.value}
               options={userSearch.options.value as any}
@@ -105,7 +105,7 @@ export default defineComponent({
               style={{ width: '100%' }}
               onSearch={userSearch.onSearch}
               onChange={(val: any) => {
-                form.userId = val ? Number(val) : undefined;
+                form.userId = val ? String(val) : undefined;
               }}
               allowClear
               notFoundContent={
@@ -113,11 +113,11 @@ export default defineComponent({
                   ? '搜索中...'
                   : userSearch.keyword.value
                     ? '无匹配用户'
-                    : '请输入手机号搜索'
+                    : '请输入手机号或用户ID搜索'
               }
             />
             <div class={styles.tip}>
-              搜索手机号选择用户，展示手机号，传用户ID给后端；目标用户无账户时系统自动建户
+              搜索手机号或用户ID选择用户，展示手机号，传用户ID给后端；目标用户无账户时系统自动建户
             </div>
           </Form.Item>
 
diff --git a/src/pages/system/ai-agent/components/PointsTab.tsx b/src/pages/system/ai-agent/components/PointsTab.tsx
index 5bbabe9..97d4ae8 100644
--- a/src/pages/system/ai-agent/components/PointsTab.tsx
+++ b/src/pages/system/ai-agent/components/PointsTab.tsx
@@ -17,7 +17,7 @@ import PointsAdjustModal from './PointsAdjustModal';
 
 /** 用户搜索 Select 的 notFoundContent 公共渲染 */
 const renderNotFound = (searching: boolean, keyword: string) =>
-  searching ? '搜索中...' : keyword ? '无匹配用户' : '输入手机号搜索';
+  searching ? '搜索中...' : keyword ? '无匹配用户' : '输入手机号或用户ID搜索';
 
 /** 分页组件公共配置 */
 const paginationProps = {
@@ -169,7 +169,7 @@ export default defineComponent({
               <Select
                 showSearch
                 value={accountFilter.userId ? String(accountFilter.userId) : undefined}
-                placeholder="手机号搜索用户"
+                placeholder="手机号或用户ID搜索用户"
                 filterOption={false}
                 loading={accountSearch.searching.value}
                 options={accountSearch.options.value as any}
@@ -194,7 +194,7 @@ export default defineComponent({
               <Select
                 showSearch
                 value={txnFilter.userId ? String(txnFilter.userId) : undefined}
-                placeholder="手机号搜索用户"
+                placeholder="手机号或用户ID搜索用户"
                 filterOption={false}
                 loading={txnSearch.searching.value}
                 options={txnSearch.options.value as any}
diff --git a/src/pages/system/ai-agent/hooks/useUserSearch.ts b/src/pages/system/ai-agent/hooks/useUserSearch.ts
index 105a484..8a4e5f5 100644
--- a/src/pages/system/ai-agent/hooks/useUserSearch.ts
+++ b/src/pages/system/ai-agent/hooks/useUserSearch.ts
@@ -1,5 +1,5 @@
 import { ref } from 'vue';
-import { getUserList, type EventUserVO } from '@/pages/events/users/model/services';
+import { getUserInfo, type UserInfoVO } from '../model/services';
 
 export interface UserSearchOption {
   /** userId 作为 value（传给后端） */
@@ -7,17 +7,40 @@ export interface UserSearchOption {
   /** 展示文案：手机号（昵称） */
   label: string;
   /** 原始用户数据 */
-  raw: EventUserVO;
+  raw: UserInfoVO;
 }
 
 export interface PresetUserInfo {
-  userId: number | string;
+  userId: string;
   phone?: string;
   nickname?: string;
 }
 
+/**
+ * 判断输入是否为手机号：
+ * 中国大陆手机号 — 以 1 开头的 11 位数字
+ */
+const PHONE_REGEX = /^1[3-9]\d{9}$/;
+
+/**
+ * 判断输入是否为雪花 ID：
+ * 雪花算法 ID 通常为 18~19 位纯数字
+ */
+const SNOWFLAKE_ID_REGEX = /^\d{17,20}$/;
+
+/** 判断输入类型：手机号 / 雪花ID / 无效 */
+export type SearchInputType = 'phone' | 'id' | 'unknown';
+
+export function detectInputType(input: string): SearchInputType {
+  const trimmed = input.trim();
+  if (!trimmed) return 'unknown';
+  if (PHONE_REGEX.test(trimmed)) return 'phone';
+  if (SNOWFLAKE_ID_REGEX.test(trimmed)) return 'id';
+  return 'unknown';
+}
+
 export function useUserSearch(delay = 300) {
-  /** 搜索关键字（内部管理，调用方无需关心） */
+  /** 搜索关键字 */
   const keyword = ref('');
   /** Select 选项列表 */
   const options = ref<UserSearchOption[]>([]);
@@ -32,19 +55,27 @@ export function useUserSearch(delay = 300) {
       options.value = [];
       return;
     }
+
+    const inputType = detectInputType(trimmed);
+    if (inputType === 'unknown') {
+      options.value = [];
+      return;
+    }
+
     searching.value = true;
     try {
-      const res = await getUserList({
-        page: '1',
-        limit: '20',
-        phone: trimmed,
-      });
-      if (res.code == 200 && res.data?.list) {
-        options.value = res.data.list.map((user) => ({
-          value: user.id,
-          label: `${user.phone}${user.nickname ? `（${user.nickname}）` : ''}`,
-          raw: user,
-        }));
+      const params = inputType === 'phone' ? { phone: trimmed } : { id: trimmed };
+
+      const res = await getUserInfo(params);
+      if (res.code == 200 && res.data) {
+        const user = res.data;
+        options.value = [
+          {
+            value: user.id,
+            label: `${user.phone}${user.nickname ? `（${user.nickname}）` : ''}`,
+            raw: user,
+          },
+        ];
       } else {
         options.value = [];
       }
@@ -66,9 +97,9 @@ export function useUserSearch(delay = 300) {
     timer = setTimeout(() => doSearch(val), delay);
   };
 
-  /** Select onChange 回调：返回 userId（数字），清空时返回 undefined */
-  const onChange = (val: any): number | undefined => {
-    return val ? Number(val) : undefined;
+  /** Select onChange 回调：返回 userId（字符串），清空时返回 undefined */
+  const onChange = (val: any): string | undefined => {
+    return val ? String(val) : undefined;
   };
 
   /** 注入预设用户选项（从表格行点击带入时使用） */
@@ -82,15 +113,9 @@ export function useUserSearch(delay = 300) {
         label,
         raw: {
           id: String(user.userId),
-          nickname: user.nickname || '',
           phone: user.phone || '',
-          realName: '',
-          idCard: '',
-          idCardImg: '',
-          idCardImgList: [],
-          gender: '',
+          nickname: user.nickname || '',
           status: '',
-          createTime: '',
         },
       },
     ];
diff --git a/src/pages/system/ai-agent/model/services.ts b/src/pages/system/ai-agent/model/services.ts
index 1c7042f..404bb21 100644
--- a/src/pages/system/ai-agent/model/services.ts
+++ b/src/pages/system/ai-agent/model/services.ts
@@ -56,7 +56,7 @@ export interface AiModelDictResetParams {
 /** AI 积分账户 VO */
 export interface AiPointsAccountVO {
   /** 用户 ID */
-  userId: number;
+  userId: string;
   /** 昵称 */
   nickname?: string;
   /** 手机号 */
@@ -72,7 +72,7 @@ export interface AiPointsAccountVO {
 /** AI 积分流水 VO */
 export interface AiPointsTxnVO {
   /** 用户 ID */
-  userId: number;
+  userId: string;
   /** 昵称 */
   nickname?: string;
   /** 手机号 */
@@ -104,7 +104,7 @@ export interface AiPointsAccountQueryParams {
   page: number;
   size: number;
   /** 可选：用户 ID 筛选 */
-  userId?: number;
+  userId?: string;
 }
 
 /** 积分流水分页查询参数 */
@@ -112,7 +112,7 @@ export interface AiPointsTxnQueryParams {
   page: number;
   size: number;
   /** 可选：用户 ID 筛选 */
-  userId?: number;
+  userId?: string;
   /** 可选：业务场景筛选 */
   bizType?: string;
   /** 可选：流水类型 1充值/2调账/3消费/4欠款 */
@@ -124,7 +124,7 @@ export interface AiPointsTxnQueryParams {
 /** 手工调点参数 */
 export interface AiPointsAdjustParams {
   /** 必填：用户 ID */
-  userId: number;
+  userId: string;
   /** 必填：积分数（非0；正=充/赠，负=扣） */
   points: number;
   /** 可选 1=充值/赠送 2=调账；缺省按正负推导 */
@@ -135,9 +135,9 @@ export interface AiPointsAdjustParams {
 
 /** AI 黑名单 VO */
 export interface AiBlacklistVO {
-  id: number;
+  id: string;
   /** 用户 ID */
-  userId: number;
+  userId: string;
   /** 昵称 */
   nickname?: string;
   /** 手机号 */
@@ -149,7 +149,7 @@ export interface AiBlacklistVO {
   /** 到期时间（null=永久；yyyy-MM-dd HH:mm:ss） */
   expireDate: string | null;
   /** 操作人 ID */
-  operatorId: number;
+  operatorId: string;
   /** 创建时间 */
   createDate: string;
   /** 更新时间 */
@@ -161,7 +161,7 @@ export interface AiBlacklistQueryParams {
   page: number;
   size: number;
   /** 可选：用户 ID 筛选 */
-  userId?: number;
+  userId?: string;
   /** 可选：状态筛选 1=拉黑中 0=已解除 */
   status?: number;
 }
@@ -169,7 +169,7 @@ export interface AiBlacklistQueryParams {
 /** 拉黑参数 */
 export interface AiBlacklistAddParams {
   /** 必填：用户 ID */
-  userId: number;
+  userId: string;
   /** 必填：拉黑原因 */
   reason: string;
   /** 可选：到期时间（yyyy-MM-dd[ HH:mm:ss]；空=永久） */
@@ -178,7 +178,7 @@ export interface AiBlacklistAddParams {
 
 /** 解除拉黑参数 */
 export interface AiBlacklistRemoveParams {
-  userId: number;
+  userId: string;
 }
 
 /** 分页数据 */
@@ -311,6 +311,7 @@ const DICT_DATA_SAVE = '/admin/manager/dict/data/save';
 const DICT_DATA_DELETE = '/admin/manager/dict/data/delete';
 const AI_BILLING_REPORT = '/admin/manager/ai/billing/report';
 const AI_FREEFORM_REPORT = '/admin/manager/ai/freeform/report';
+const USER_INFO = '/admin/manager/user/info';
 
 /** 单价字典类型标识 */
 export const AI_BILLING_PRICE_DICT_TYPE = 'ai_billing_price';
@@ -414,3 +415,25 @@ export function getAiFreeformReport(
 ): Promise<ApiResult<AiFreeformReportVO[]>> {
   return get(AI_FREEFORM_REPORT, params as Record<string, unknown>);
 }
+
+/** 用户信息查询参数（GET /admin/manager/user/info） */
+export interface UserInfoQueryParams {
+  /** 雪花 ID */
+  id?: string;
+  /** 手机号 */
+  phone?: string;
+}
+
+/** 用户信息返回 */
+export interface UserInfoVO {
+  id: string;
+  phone: string;
+  nickname: string;
+  status: string;
+  [key: string]: unknown;
+}
+
+/** 按 id 或手机号查询单个用户信息 */
+export function getUserInfo(params: UserInfoQueryParams): Promise<ApiResult<UserInfoVO>> {
+  return get(USER_INFO, params as Record<string, unknown>);
+}
diff --git a/src/pages/system/ai-agent/model/useBlacklistModel.ts b/src/pages/system/ai-agent/model/useBlacklistModel.ts
index 073af24..d926bef 100644
--- a/src/pages/system/ai-agent/model/useBlacklistModel.ts
+++ b/src/pages/system/ai-agent/model/useBlacklistModel.ts
@@ -27,7 +27,7 @@ import {
  */
 export function useBlacklistModel() {
   const filterForm = reactive({
-    userId: '' as string | number,
+    userId: '' as string,
     status: '' as '' | number,
   });
 
@@ -39,8 +39,8 @@ export function useBlacklistModel() {
       size: (pagination as any).pageSize.value,
     };
     const uid = filterForm.userId;
-    if (uid !== '' && uid != null && !Number.isNaN(Number(uid))) {
-      params.userId = Number(uid);
+    if (uid) {
+      params.userId = String(uid);
     }
     if (filterForm.status !== '') {
       params.status = Number(filterForm.status);
@@ -68,6 +68,10 @@ export function useBlacklistModel() {
 
   const addModalVisible = ref(false);
   const submitting = ref(false);
+  /** 预设用户信息（从列表「再次拉黑」带入） */
+  const presetUser = ref<{ userId: string; phone?: string; nickname?: string } | undefined>(
+    undefined,
+  );
 
   /** 搜索 */
   const handleSearch = () => {
@@ -94,12 +98,24 @@ export function useBlacklistModel() {
 
   /** 打开拉黑弹窗 */
   const openAddModal = () => {
+    presetUser.value = undefined;
+    addModalVisible.value = true;
+  };
+
+  /** 打开拉黑弹窗（带预设用户信息，用于「再次拉黑」） */
+  const openAddModalWithRecord = (record: AiBlacklistVO) => {
+    presetUser.value = {
+      userId: record.userId,
+      phone: record.phone,
+      nickname: record.nickname,
+    };
     addModalVisible.value = true;
   };
 
   /** 关闭拉黑弹窗 */
   const closeAddModal = () => {
     addModalVisible.value = false;
+    presetUser.value = undefined;
   };
 
   /** 提交拉黑 */
@@ -132,7 +148,7 @@ export function useBlacklistModel() {
         try {
           const res = await removeAiBlacklist({ userId: record.userId });
           if (res.code == 200) {
-            message.success(res.msg || '已解除拉黑');
+            message.success('已解除拉黑');
             fetchList();
           } else {
             message.error(res.msg || '解除失败');
@@ -151,10 +167,12 @@ export function useBlacklistModel() {
     pagination,
     addModalVisible,
     submitting,
+    presetUser,
     handleSearch,
     handleReset,
     handlePageChange,
     openAddModal,
+    openAddModalWithRecord,
     closeAddModal,
     handleSubmitAdd,
     handleRemove,
diff --git a/src/pages/system/ai-agent/model/usePointsModel.ts b/src/pages/system/ai-agent/model/usePointsModel.ts
index 7033510..a7886ca 100644
--- a/src/pages/system/ai-agent/model/usePointsModel.ts
+++ b/src/pages/system/ai-agent/model/usePointsModel.ts
@@ -31,11 +31,11 @@ export function usePointsModel() {
   const subView = ref<'account' | 'txn'>('account');
 
   const accountFilter = reactive({
-    userId: '' as string | number,
+    userId: '' as string,
   });
 
   const txnFilter = reactive({
-    userId: '' as string | number,
+    userId: '' as string,
     bizType: '' as string,
     type: '' as '' | number,
     date: '' as string,
@@ -50,8 +50,8 @@ export function usePointsModel() {
       size: (accountPagination as any).pageSize.value,
     };
     const uid = accountFilter.userId;
-    if (uid !== '' && uid != null && !Number.isNaN(Number(uid))) {
-      params.userId = Number(uid);
+    if (uid) {
+      params.userId = String(uid);
     }
     return params;
   };
@@ -62,8 +62,8 @@ export function usePointsModel() {
       size: (txnPagination as any).pageSize.value,
     };
     const uid = txnFilter.userId;
-    if (uid !== '' && uid != null && !Number.isNaN(Number(uid))) {
-      params.userId = Number(uid);
+    if (uid) {
+      params.userId = String(uid);
     }
     if (txnFilter.bizType) {
       params.bizType = txnFilter.bizType;
@@ -116,7 +116,7 @@ export function usePointsModel() {
   const adjustModalVisible = ref(false);
   const adjusting = ref(false);
   /** 调点弹窗预设用户信息（从账户行点击「调点」时带入） */
-  const presetUser = ref<{ userId: number; phone?: string; nickname?: string } | undefined>(
+  const presetUser = ref<{ userId: string; phone?: string; nickname?: string } | undefined>(
     undefined,
   );
 
@@ -179,7 +179,7 @@ export function usePointsModel() {
   };
 
   /** 打开调点弹窗（可预设用户信息） */
-  const openAdjustModal = (user?: { userId: number; phone?: string; nickname?: string }) => {
+  const openAdjustModal = (user?: { userId: string; phone?: string; nickname?: string }) => {
     presetUser.value = user;
     adjustModalVisible.value = true;
   };